The HP OfficeJet 4400 K410 (DOT4USB) Windows driver is a driver for the HP OfficeJet 4400 series printer, specifically for the K410 model, which uses the DOT4USB protocol. This protocol is part of the USB printing architecture used by HP and other manufacturers for printers that support USB connections, especially in cases where the printer uses a specialized or non-standard USB interface.
The driver enables your Windows operating system to communicate with the printer, allowing you to print, scan, and perform other tasks. The "DOT4USB" designation generally refers to the USB connection method used by the printer (not a specific model), and the driver helps your PC interface with the printer via that protocol.